†Colombiceras (Egoianiceras) Avram 1974 (ammonite)
Cephalopoda - Ammonitida - Acanthohoplitidae
Parent taxon: Colombiceras according to M. Matsukawa 2021
Sister taxa: Colombiceras (Colombiceras), Colombiceras brumale, Colombiceras caucasicum, Colombiceras crassicostatum, Colombiceras satowi, Colombiceras spathi, Colombiceras strangulatum
Subtaxa: Colombiceras (Egoianiceras) hiratai
Ecology: fast-moving nektonic carnivore
Distribution:
• Cretaceous of Japan (2 collections)
Total: 2 collections each including a single occurrence